Cutter.



Patented. Apr. 20

Gim-

. C. BACKERT. CUTTER. APPLICATION FILED DEC. 24, 1914.

THE NORRIS PETERS CO" PHOTO-LITHLZ, WASHINGTUN. D. C.

trac ea.

' are used in the printing trade.

' disk body. The peripheralface of this disk CllZY of New -York, boroughofv Brooklyn,

- we are tha anion,

aormr c. BACKERT, or New "roan, N. Y.

- CUTTER.

'Eipecification of Letters Patent. Pat-rented Ap 2t}, 1915, Applicationfiled December 24, 1914. SerialNo. 878,877.

ment with the trimming edges 6, are provided radially extending raisedsecond trimming cutters these cutters at their cutting edges beingelevated above the flat surface of co the disk body 2 and being beveleddownwardly to that flat surface rearwardly of their cutting edges,Adjacent and forwardly of each of these trimming cutters 7 To all whomit mag concern: 1

Be it known that I, JO N C. Bnoxnar, a citizen of the UnitedStates,-res1d1ng at the county of Kings, andState'of New York, haveinvented certain new and useful Tmprovements in Cutters, of which thefollowing is a full, clear, and exact description.

This invention. relates to cutters and more particularly to a cuttingtool of therotating. disk type, which is effective to both out and trimor smooth, and is peculiarly adapted slugs and rules suchas' elongatedclearance slots tending substantially parallel with the cutting edges 7and for the full length of said cutting edges being further extendedacross 7 the face of the hub 1 in the form of grooves, The particularconstruction of this invenas indicated in Fig. 2, clearance slots extionis one which makes the tool entirely tending throu h the body of thecutter from 7 y l b u o self-clearing and which also produces a very theinner to the outer face, their inner ends effective cutting and trimmingaction.v

merging into the hub grooves which serve A preferable embodiment of theinvention to feed the slivers and other shavings away is described indetail in the following speclfrom the operative cutting part of thetool. fi ation, taken in connection with the fol- 7 From an inspectionof the drawings it will lowing drawings, in which- V i i be evident thatthe inner face of the disk Figure 1 is a view in side elevation of the 1body 2 is flat, and is below the inner triminner or swaging face of thedisk. Fig. 2 ming cutters 7, the packing face 9 and outer is anirregular vertical section taken on the trimming cutters 6. There is,therefore, a line 2-2 of Fig. 1. Fig.13is a fragmentary; passage formedaround: the cutters 7 inhorizontal section'on the line 88 of Fig. 1.wardly of this packing face so that slivers Referring to the drawings bynumerals, 1 of metal severed by the cutters 7 may pass indicates theapertured hub of the disk body to an adjacent slot 8, the adjacentcutters 7 and 2 the main disk body thereof, the hub stopping anddiverting the shavings into portion being laterally extended from thethese slots.

In action, when the disk is rotated and the material to be cut is fedtherea 'ainst, the cut for treating, metal body is provided with aplurality of transversely extending cutting teeth whose edges ting teethor edges 3 will filst act upon the are indicated at 3, the face of thedisk rearmaterial which will be a ooved, and as the wardly of theseteeth being cut inwardly as cutters "penetrate, will beat leastpartially indicated at sand curved outwardly to the smoothed by the sidetrimming edges 6. point of the next adjacent toothed edge 3, uimg thiscutting and trimming action forming a pocket 5 of substantially the same.the,material cut will pare off or curl up in width, in which theslivers of metal may the form of slivers or shavings and will be curl upand from which they will escape as caught within'the pockets 5, and asthe tool hereinafter seen. These edges 3 are priiotates Wlll drop byiavity downwardly marily cutting edges. On the inner face of out of saidpockets and away from the tool the disk, or on that face of the diskadja- The packln face 9, being elevated and alcent the work, the surfaceat the inner edge, mostin' the plane of the trimmin cutters 6,

i of the pockets 5 is raised to form curved will, therefore, be closelyadjacent the side trimming edges 6, and these-edges extend of the slotcut into the material and will from the cutting-edges 3 atthe outsideedge prevent these shavings and slivers from of the disk to a pointadjacent the base line passing inwardly toward the cutters 7 and of thepockets 5 being slightly beveled downjamming between the trimmingcutters 6 -7. wardly to the face of the disk which, from As thecutterpenetrates still farther into a point below the pockets 5,outwardly, is the material the trimming cutters 7 W111 elevatedrelatively to the inner surface of com'einto play smoothing the surfacewhich the disk, forming anannular packing'fa'ce 9. has been heretoforecut and roughly On the face of the disk-2,'at a plurality of smoothedand givingFit a finished ap earpoints inwardly of and inoperationis'completed. Any

substantial alineance when the A slivers which are made by the cutters?will.

; understood that 'drop in an adjacent slot 8 and be ejected from thecutter in an obvious manner.

as I have described clearing of the slivers \Vhile I have embodiment ofand shavings.

herein described a specific my invention, I desire it the same, issusceptible of g substantial variation in struetureandin relativearrangement of parts within the spirit of the invention and the seopeofthe appended claims.

What I. claim, therefore, and desire to 'secure by Letters Patent is:

H as'said cutting edge..

-. ting edge tov v inwardly and forwardly 1. A disk cutter having itsperipheral surface providedwith a transverse cutting edge and with anadj acent inwardly curving shaving pocket of, substantially 2. A diskcutter havingits peripheral surface provided with alternating transversecutting edges and inwardly curved shaving receiving pockets ofsubstantially. the same width as said cutting edges.

3. A disk cutter having its peripheral surface provided with transversecutting edges, said surface rearwardly of each cutting edge extendinginwardly therefrom andv thence curving outwardly to the next adjacentoutform a curved shaving pocket of each cutting edge and ofsubstantially the same as its cutting edge. I 4:. A disk cutter havingits peripheral surface provided with a transverse cutting edge and witha shaving pocket. extending inwardly and forwardly therefrom, the inneror work face of said disk having a packing surface thereon inwardly ofsaid pocket and having a trimming edge inwardly of said face providedpacking surface.

5. A disk cutter having its peripheral surface provided with a pluralityof transverse cutting edges with shaving pockets extending inwardly andforwardly therefrom, the inner or work face of said disk having anannular packing surface inwardly of said pockets and having alsotrimming edges inwardly of said annular packing surface.

6. A'disk cutter having its peripheral surwith transverse cutting-edgesalternating with shaving pockets extending inwardly and forwardly ofsaid edges, the inner or work face of said disk having a I relativelyelevated packing surface extendingaround said disk face inwardly of saidpockets and having also trimming edges inwardly of said packing surface.

7. A disk cutter having its peripheral surface providedwith transversecutting edges 1. alternating with shaving pockets curving inwardly andforwardly therefrom, the inthe same width ,or the disk face and around,in part at least,

of the curved edges of said pockets.

width J edges.

the inner or work face of said disk having ner or work face of said diskhaving a relatively elevated packing surface extending around said diskinwardly of said pockets and having also trimming edges inwardly of saidpacking surface.

8. A disk cutter having its peripheral surface provided with transversecutting edges and with shaving pockets extending inwardly and forwardlytherefrom, the inner or work face of said disk having relatively raisedtrimming edges extending from said cutting edges inwardly of the diskface.

9. A disk cutter having its peripheral surface provided with transversecutting edges and with shaving pockets extending inwardly and forwardlytherefrom, the inner or work face of said disk having relatively raisedtrimming edges extending from said cutting edges inwardly of the diskface and about the edges of said pockets.

10. A disk cutter having its peripheral surface provided with transversecutting edges and with shaving pockets curving inwardly and forwardlyfrom said edges, the inner or work face of said disk having relativelyraised side trimming edges extending from said cutting edges inwardly11. A disk cutter having its peripheral surface provided withalternating transverse cutting edges and shaving pockets curvinginwardly and forwardly from said edges, the inner or work face of saidcutter having relatively raised trimming edges extending inwardly of thedisk face from said transverse cutting edges and about the curved edgesof said pockets.

12. A disk cutter having its peripheral surface provided with atransverse cutting edge with a shaving pocket extending inwardly andforwardly therefrom, the inner or work face of said disk having atrimming edge adjacent said pocket and inwardly of said cutting edge,said disk face also having a relatively elevated packing surfaceinwardly of said pocket and trimming edge.

13. A disk cutter having its peripheral surface provided with aplurality of transverse cutting edges with shaving pockets extendinginwardly and forwardly from said edges, the inner or work face of saiddisk having trimming edges extending inwardly from said cutting edgesand about the edges of'said pockets, said disk face inwardly and,inwardly of said pockets, having an annular packing surface extendingaround inwardly said pockets and trimming 14. A disk cutter having itsperipheral surface provided with transverse cutting edges alternatingwith shaving pockets extending inwardly and forwardly, thereof trimmingedges extending inwardly from said cutting edges and about said pockets,said inner disk face having also an annular packing surface extendingtherearound inwardly of said pockets and trimming edges.

15. A disk cutter having a laterally extending hub portion at its outerface and having a trimming edge on its inner or work face, said trimmingedge being raised relatively to the adjacent face of the cutter, saidcutter having a clearance slot therein adacent said trimming edge, saidclearance through said cutter, said hub slot extending portion having agroove therein communicating with the inner end of said slot.

16. A disk cutter having its peripheral surface provided with atransverse cutting edge and with an adjacent inwardly extending shavingpocket, the operative face of said cutter having a trimming edge thereonbeginning at said transverse edge and extending inwardly therefrom aboutthe edge of said pocket, said cutter face also having a second inwardlyspaced trimming edge,- said trimming edges being raised relatively tothe face of the disk.

17. A disk cutter having its peripheral surface provided with atransverse cutting edge and with an adjacent inwardly extending shavingpocket, the operative face of said cutter inwardly from said transverseedge and about the edge of saidpocket being provided with a trimmingedge, and with a second inwardly spaced trimming edge in substantialalinement with the first, said edges being raised relatively to the faceof the disk, said disk adjacent said second trimming edge having aclearance slot therethrough, there being a packing surface inwardly ofsaid pocket and first trimming edge to confine the material cut by saidtransverse and first trimming edges to said pocket.

18. A disk cutter having its peripheral face, provided with transversecutting edges having shaving pockets extending inwardly and forwardlytherefrom, the inner or work face of said cutter having trimming edgesextending inwardly from said cutting edges Copies of this patent may beobtained for five cents each,

surface inwardly of erative face of said cutter having about the edgesof said pockets and having also other trimming edges inwardly of andspaced from the first edges with clearance slots through said diskadjacent said second trimming edges, there being a packing saidpocketsand first named trimming edges and outwardly of said second trimmingedges, said surface acting to confine the material cut by saidtransverse and first trimming cutters to said pockets.

19. A disk cutter having its peripheral surface provided with transversecutting edges and with shaving pockets curving inwardly and forwardlytherefrom, the opa trimming edge extending inwardly from each of saidtransverse cutting edges about said curved pockets, and having a secondtrimming edge spaced inwardly from each of the first and in substantialalinement therewith, said edges being raised relatively to the adjacentface of the disk, said disk having a clearance slot vtherein adjacentand forwardly of each second trimming edge. a

20. A' disk cutter having its peripheral surface provided withtransverse cutting edges and with shaving pockets curving inwardly andforwardly therefrom the operative face of said cutter having a trimmingedge extending inwardly from each of said transverse cutting edges andabout said curved pockets, and having a second trimming edge spacedinwardly fromeach of the first and in substantial alinement therewith,

said edges being raised relatively to the adjacent face. of the disk,said disk having a clearance slot therein adjacent and forwardly of eachsecond trimming edge, there being a packing surface inwardly of saidpockets and first named trimming edges and outwardly of said secondtrimming edges, said surface acting to confine the material cut by saidtransverse and first trimming cutters to said pockets.

7 JOHN C. BACKERT.

Witnesses:

HENDERSON F. HILL, R. C. MiTcHELL.

by addressing the Commissioner of Patents,

Washington, D. G.

